TELESCOPIC STEERING APPARATUS

摘要

When adjusting the forward-backward position of a steering wheel, together with reducing any uncomfortable feeling experienced by the driver, a support bracket is prevented from breaking away toward the front due to an extremely large force applied during the adjustment operation. Elastic sleeves 35 are mounted inside the long holes 25a in the forward-backward direction, and an adjustment rod 19a is inserted through the inside of the elastic sleeves 35. Gaps 36 located between the outer circumferential surface of both end portions in the forward-backward direction of the elastic sleeves 35 and the inner circumferential surface of the both end portions in the forward-backward direction of the long holes 25a in the forward-backward direction. When adjusting the forward-backward position the steering wheel, the adjustment rod 19a forcibly displaces toward the end portions in the forward-backward direction of the long holes 25a in the forward-backward direction, and when forcibly colliding with the inner circumferential surface of the end portions in the forward-backward direction of the elastic sleeves 35, the gaps 36 reduce the impact that is applied to the inner circumferential surface of the end portions of the long holes 25a in the forward-backward direction from the adjustment rod 19a by increasing the amount that the end portions of the elastic sleeves 35 elastically deform.

主权项

1. A telescopic steering apparatus, comprising:
a steering column that is cylindrical, and comprises an outer column, the inner diameter of at least one end portion in the axial direction thereof being able to expand or contract, and an inner column that is fitted inside and is supported by the inner diameter side of the outer column so as to be able to displace in the axial direction, that are combined so as to be able to extend and contract; a displacement bracket that is fastened to one of the outer column and the inner column that is located on the rear side, displaces in the axial direction together with the one column as a steering wheel is moved forward or backward, and comprises a long hole in the forward-backward direction that extends in the axial direction of the one column; an elastic sleeve that is mounted inside the long hole in the forward-backward direction; a steering shaft that is supported on the inner diameter side of the steering column so as to be able to rotate freely, and the steering wheel is fastened to a portion thereof that protrudes toward the rear further than an opening on the rear end side of the steering column; a support bracket that supports the steering column with respect to a vehicle body such that forward-backward position of the steering wheel can be adjusted, and comprises a pair of support plate portions that are located on both sides in the width direction of the displacement bracket, and a pair of through holes that are formed in portions of the support plate portions that are aligned with each other; an adjustment rod that is inserted in the width direction of the displacement bracket through the through holes and the elastic sleeve that is mounted inside the long hole in the forward-backward direction; and an expansion and contraction mechanism that expands or contacts a space between inside surfaces of the support plate portions by expanding or contracting a space between a pair of pressure portions that are provided in portions on both end portions of the adjustment rod that face outside surfaces of the support plate portions.